Pleurotoma ( Pleurotomella ) agassizi Verrill Watson 1881: 451 1886: 335 Verrill 1885: 414 Integrative taxonomy of Gymnobela and Pontiothauma (Conoidea: Raphitomidae) from Australian waters provides more evidence of transoceanic distribution in deep-sea gastropods Criscione, Francesco Hallan, Anders Journal of Natural History 2024 2024-08-29 58 37 - 40 1429 1459 3HQG7 (Verrill and Smith, 1880) A.E.Verrill & S.Smith 1880 [328,565,142,169] Gastropoda Raphitomidae Gymnobela Animalia Neogastropoda 20 1449 Mollusca species agassizi  ( Figures 3A-B, 6A)    Pleurotoma( Pleurotomella) agassiziVerrilland Smith, 1880 – Verrill 1880: 394; Verrilll 1882: 454, pl. 57, Fig. 3–3a     Pleurotoma( Pleurotomella) brychia Watson, 1881–  Watson 1881: 451;  1886: 335, pl. 19, fig. 4    Pleurotomella vitrea Verrill, 1885–  Verrill 1885: 414, pl. 44, fig. 6   Pleurotomella agassizivar. permagnaDall, 1890– Dall 1890: 308   Material examined   Australia, New South Wales, JervisCMR (− 35.333°S, 151.258°E), IN2017_ V03_056, 2650–  2636 m, AMS C.519355.   Distribution North Atlantic and Jervis CMR off the coast of NSW.   Remarks This species was previously known from its shell only and some minor details of the external anatomy of the animal ( Bouchet and Warén 1980, p. 50). We provide below some further anatomical details. Animal white. Penis large, coiling clockwise, cylindrical to slightly tapering distally. Cephalic tentacles short, somewhat cylindrical, tip blunt; eyes minute. Venom apparatus: proboscis extremely long, coiled; venom gland convoluted, long; muscular bulb elongated, pearlescent. Radula of hypodermic teeth, relatively straight, tightly rolled; approximately 150 µm in length; barbs absent; adapical opening long; ventral side forming blade approximately 1/6 of length of tooth; base wide, angular, with lateral process; texture rugose; basal opening large, subcircular. Ligament long, rather broad. Apart from its slightly more rounded whorl profile and its weaker ribs, the shell of this species is very similar to that of  G. engoniaand  G. verecunda– from which, however, it can be easily distinguished by its dark orange-stained columella. 4942156314 V Australia 2636 -35.333 Jervis 71 151.258 20 1449 V03 1 New South Wales